Finding the Fourth Proportional to 445,419.20, 668,128.80 and 370,623.80
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Solution
The fourth proportional to 445,419.20, 668,128.80 and 370,623.80 is: 555,935.70
Step by Step Solution
- Step 1: Write the proportion equation
445,419.20 : 668,128.80 = 370,623.80 : x - Step 2: Convert to fraction form
445,419.20/668,128.80 = 370,623.80/x - Step 3: Cross multiply
445,419.20x = 668,128.80 × 370,623.80 - Step 4: Simplify right side
445,419.20x = 247,624,434,745.44 - Step 5: Solve for x
x = 247,624,434,745.44/445,419.20 - Step 6: Final answer
x = 555,935.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.